ASoC: codecs: wsa881x: fix return values from kcontrol put

wsa881x_set_port() and wsa881x_put_pa_gain() currently returns zero eventhough
it changes the value. Fix this, so that change notifications are sent
correctly.

Fixes: a0aab9e1 ("ASoC: codecs: add wsa881x amplifier support")
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20211130160507.22180-5-srinivas.kandagatla@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/wsa881x.c

@@ -772,7 +772,8 @@ static int wsa881x_put_pa_gain(struct snd_kcontrol *kc,
 
 		usleep_range(1000, 1010);
 	}
-	return 0;
+
+	return 1;
 }
 
 static int wsa881x_get_port(struct snd_kcontrol *kcontrol,
@@ -816,15 +817,22 @@ static int wsa881x_set_port(struct snd_kcontrol *kcontrol,
 		(struct soc_mixer_control *)kcontrol->private_value;
 	int portidx = mixer->reg;
 
-	if (ucontrol->value.integer.value[0])
+	if (ucontrol->value.integer.value[0]) {
+		if (data->port_enable[portidx])
+			return 0;
+
 		data->port_enable[portidx] = true;
-	else
+	} else {
+		if (!data->port_enable[portidx])
+			return 0;
+
 		data->port_enable[portidx] = false;
+	}
 
 	if (portidx == WSA881X_PORT_BOOST) /* Boost Switch */
 		wsa881x_boost_ctrl(comp, data->port_enable[portidx]);
 
-	return 0;
+	return 1;
 }
 
 static const char * const smart_boost_lvl_text[] = {